Projectile.



SWETT.

PBOJEUTILE PPLI N'F ED 53.10

Patented Jan. 7, 1913.

I lil UNITED STATES PATENT OFFEE WILLIAM HENRY SWETT, OF'BERKELEY,CALIFORNIA.

PROJECTILE.

Specification of Letters Patent.

Patented Jan. 7, 1 913.

Application filed February 10, 1912. Serial No. 676,752.

the principal object of the invention is to so construct the projectilethat it will hold a truer course through'the air with less rifling ofthe gun barrel thus causing the gun to last. longer. This isaccomplished by forming the projectile of two portions, a rear and aforward portion, the forward portion being formed of heavier metal thanthe .rear portion, thus causing the projectile 'as it passes through theair to he held true. It .is also intended to provide the forward endwith a hard penetratingpoint which will cause the heavy or forwardportion of the projectile to mushroom when it strikes, and also toassist the projectile in entering the object which it strikes.

This invention is illustrated in the accompanying drawings, wherein,

Figure 1 is a side elevation of one form of projectile. Fig. 2 is alongitudinal sectional view through Fig. 1. Fig. 3 is a view similar toFig. 2. showing the projectile in the course of construction. Fig. 4 isa cross section taken through the projectile. Fig. 5. is a sideelevation of a slightly modified form of projectile. Fig. 6 is alongitudinal sectional view through Fig. 5. Fig. 7 is aview similar toFig. 6, showing the projectile provided with a penetrating point. Fig. 8is an end view of the projectile shown in, Fig.6.

Referring to thedrawing, it will be seen -that there has been provided arojectile having a body portion 10 which is ormed of relatively lightmetal, such for instance as aluminum, and a relatively heavy nose 11'-which is formed of a heavy but comparatively soft metal, suchforinstance as lead.

T he body portion and nose fit into a casing 12 and a tip 13 is mountedupon the forward end of the nose 11; The tip is provided with a crimpedinner portion forming the annular seat 14 in which the inwardlyextending flange 15 fits. After the portions of the proectile have beenassembled as shown in Fig.

3, they are placed in a swaging machine. 5.

and the outer casing and tip are compressed so that they assume theshape shown in Fig. 2-, thus being tightly held in place and holding theportions of the projectile together.

In Figs. 5, 6 and 8, there has been shown a slightly modified form ofprojectile in which the casing 16 is open at the rear end 'so that theheavy nose 17 and lightbody portion 18 may be inserted, the body portion18 being provided with a reduced end forming a seat 19 in which theedges 20 of the casing are compressed so that the portions of theprojectile will be held together.

In Fig. 7 there has been provided a projectile having a casing 21 inwhich the light body portion and heavy nose 23 are mounted. The nose 23is provided in its forward end with a conical socket- 24: in which apoint 25 is mounted. The point is formed of hard metal such, forinstance, as

steel, and is provided with a pointed outer 7 end portion so that apenetrating point is provided. The point is provided intermediate itslength with an annular groove 26 in which an inwardly extending flange27 formed at the forward end of the casing 21 is swaged, so that thepoint will be securely held in place.

hen using this projectile the light body portion may be more easilydrawn by the air currents caused by its passage through the vair, thanthe heavy nose. This causes the projectile to travel more truly throughthe air after leaving the gun.

In the form shown in Fig. 7, the steel .90-

pointassists the projectile in entering the object struck and alsocauses the soft nose to be mushroomed upon striking the object.

1. A projectile comprising a casing, a relatively light body portionmounted in said casing, a relatively heavy and soft nose mounted in saidcasing. said nose being provided with a socket in its outer end, arela-' tively hard penetrating point seated in said we socket andprovided with an annular groove formed intermediate its length, and aniffwnrdly extending flange at the end of said said groove to hold saidbody portion, nose casing adapted to be compressed into said andpointtogether. in groove. In testimony whereof I aflix my signature 2. Aprojectile comprising a body portion, in presence of two witnesses. atnose a point carried by said nose and pro- WILLIAM HENRY SvVETT. videdwith an annular roove adjacent its \Vitnesses:

- n a o inner end, and a casing for said body por- F. P. Scnnommn,

"W. A. STOCK.

tion and nose having its edge fitting into 1 Copies of this patent maybe obtained for five cents each, by addressing the Commissioner ofBatents,

Washington, I). G.

